Exploration of Drug Science

From: Late-stage diversification strategy for the synthesis of peptide acids and amides using hydrazides

Table 1

Optimization of oxidant

Entry	Oxidant	Equiv	pH	HPLC purity of 2a (%)^a
1	CuSO₄∙5H₂O	20	3.8	11
2	Oxone	5	2.1	93
3	IBX	5	1.8	< 1
4	NBS	5	4.4	< 1

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^a detected at 220 nm